Liquid-supply system.



No. 776,724. PA'IENTED DEC. 6, 1904. X. GAVERNO.

LIQUID SUPPLY SYSTEM.

Aprnlowmn FILED my 12, 1904. no MODEL.

A Nam/5Y3 NITED STATES Patented Deeemloer fi, 1904.

PATENT 1Tb rides.

PNEUMATIC WATER SUPPLY COMPANY, OF KEWVANEE,

CORPORATION OF ILLINOIS.

ILLINOIS. A

LIQUID-SUPPLY SYSTEM...

SPECIFICATION forming part of Letters Patent No. 776,724, dated December6, 1904.

Application filed May 12, 1904. Serial No. 207,612. (No model.)

To (LZZ/ LU77/0772/ it may concern.-

Be it known that I, XnNornoN CAvERNo, a citizen of the United States,residing at Kewanee, county of Henry, and State of Illinois,

5 have invented new and useful Improvements in Liquid-Supply Systems, ofwhich the following is a specification.

My invention relates to improvements in water and other liquid supplysystems.

The object of my invention is to provide means for maintaining a supplyof compressed air in closed water-supply tanks.

It is desirable to dispense with elevated tanks in water-supply systems;but a difficulty has been experienced in maintaining a sulficientair-supply in closed tanks owing to the absorption of air in the waterand escape of air by leakage until the pressure becomes in sufficient tolift the water to the desired elevation.

My invention contemplates utilizinga portion of the water for renewingthe supply of air in the tank, also for utilizing the excess pressure ofthe water when the tank is newly lilled for renewing the air-supplywithout waste of water, my invention being capable of either automaticor manual operation.

In the following description reference is had to the accompanyingdrawings, in which Figure 1 is a side view of my invention, showingtheair-supply pump in vertical section and arranged for manual operation.Fig. 2 is a similar View showing the air-supply pump and connections foroperating the same automatically. Fig. 3 is an enlarged sectional viewof the two-way valve 27 shown in Fig. 2.

Like parts are identified by the same reference characters throughoutthe several views.

1 is a water-supply tank provided with a 4 sight-glass 2, by means ofwhich the height of the water in the tank may be ascertained.

3 is a pump for supplying water to the tank with which it is connectedbya supply-pipe 4:.

5 and 6 are service-pipes.

7 is a pump-cylinder having a Water-actuated piston at 8 and anair-compressing piston at 9, the two pistons being connected by aweighted rod 10. The air-receiving end of the cylinder 7 is preferablyreduced and provided with an air-inlet at 11, which admits air to thepun'n'rcylindcr during the down ward movement of the pistons. During theupward movement of the pistons the air is discharged through the pipe 12into the tank 1, the pipe 12 being preferably connected with pipe 4 toavoid multiplying the tank connections. A check-valve (indicatedat 13)is located at any convenient point between the pump-cylinder and thetank, and a hand-valve. 14 is also employed, the same being closed atall times except when the pump is in use.

Water is admitted to the lower end of the pump-cylinder through the pipe16, leading from the service-pipe 5. the admission of the water beingcontrolled by an ordinary cock at 17. The water thus admitted to thepumpcylinder lifts the piston and forces the air in the upper end of thecylinder into the tank, as above explained. The water may then bepermitted to exhaust from the pump-cylinder through the drain-pipe 18,provided with a cock 19, controlling its discharge, the cock 17 beingclosed when cook 19 is opened. Where the lift is not too great, aservice-pipe 20 may be connected with the pipe 18 and provided with anordinary faucet 21. In such case the cook 17 is left constantly open andthe cook 19 constantly closed. Whenever the faucet 521 is opened, thepressure underneath the pump-piston 8 will be reduced to permit saidpiston to descend. When the faucet 21 is again closed, the pressure ofthe water is restored underneath the piston 8 to lift the piston andforce air into the tank 1.

Referring to Fig. 2, it will be observed that the tank, with its supplyand service pipe connections, are the same as in Fig. 1. The pump,however, is supplied from the tank by means of the pipe 25, the waterbeing exhausted from the pump through the pipe 26, and a two-Way valve27 is employed to regulate the admission and discharge of the water fromthe pump. The pump stugply-pipe is also provided with a valve at 29,this valve being operated by a float 30 in the tank eonnected with thevalve by a float-arm 31, rockshaft 32, arm 33, link 34, and valve-lever35. Valve 27 being opened for the admission of water to thepump-cylinder, it will be seen that whenever the water in tank 2 is ofsuflicient height to lift float 30 motion may be communicated from saidfloat to open valve 29, thus setting thepump in operation. The lowerpump-piston 8 is provided with a detaining-rod 37, having projections 38and 39, each respectively adapted to engage a valveactuating lever 40 toactuate the valve 27 by means of the link 41 and valve-lever 42, wherebythe pump-cylinder is alternately placed in communication with the supplyand exhaust pipes 25 and 26, respectively, and the operation of the pumpis thus made to proceed automatically until the water-supply in the tank1 is lowered and permits a suflicient depression of the float 30 toclose the valve 29.

Where it is not desired to rely upon the control of the pump by means ofthe float, a pressure-cylinder 45 is used. This cylinder is connectedwith the tank preferably by means of a pipe 46 and the service-pipe 5. Apiston 47 in thecylinder is actuated by the water-pressure in oppositionto a spring 48 to open a valve at 49, controlling the admission of waterto the pump through the pipe 50, the piston being connected with thevalve 49 by piston-rod 51, lever 52, link 53, and valvelever 54. Withthis construction Whenever the pressure in the tank 1 becomes suflicientto lift the piston 47 the valve 49 will be opened and the pump set inoperation until the pressure is reduced sufficiently to permit thespring 48 to force piston 47 downwardly, and thus again close valve 49.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a liquid-supply system, the combination of a fluid-containingtank;'means for supplying liquid thereto; an air-pump connected tosupply air to the tank, and adapted to be operated by liquid underpressure; and connections for supplying liquid under pressure to thepump from the tank.

2. In a liquid-supply system, the combination of a fluid-containingtank; means for supplying liquid thereto; an air-pump connected tosupply air to the tank and adapted to be operated by liquid underpressure; and connections for supplying liquid under pressure to thepump from the tank; together with means for controlling the supply andexhaust of the power liquid to and from the pump.

I 3. In a liquid-supply system, the combination of a fluid-containingtank; means for supplying liquid thereto; an air-pump connected tosupply air to the tank, and adapted to be operated by liquid underpressure; and connections for supplying liquid under pressure to thepump from the tank; together with automatic means for controlling thesupply and exhaust of the power liquid to and from the pump.

4. In a liquid-supply system, the combination of a fluid-containingtank; means for supplying liquid thereto; an air-pump connected tosupply air to the tank, and adapted to be actuated by liquid underpressure; means, independent of the liquid-pressure, for actuating theair-pump to draw in air when the liquidpressure is reduced; and meansfor varying the liquid-pressure in the pump and permitting the operationof said independent actuating means.

5. In a liquid-supply system, the combination of a fluid-containingtank; means for supplying liquid thereto; an air-pump cylinder having anair-compressing piston and connected to supply air to the tank; aliquid-cylinder provided with a piston connected to the airpump piston;supply connections between the liquid-cylinder and the tank; valveddischarge connections for said cylinder, and means for actuating thepistons against the pressure in said liquid-cylinder when said dischargeconnections are open.

6. In a liquid-supply system, the combination of a fluid-containingtank; means for supplying liquid thereto; an air-pump connected tosupply air to the tank, and adapted to be actuated by liquid underpressure; connections adapted to supply such liquid to the pump from thetank, means, independent of the liquid-pressure, for actuating theair-pump to draw in air when the liquid pressure is reduced; and meansfor varying the liquid-pressure in the pump and permitting the operationof said independent actuating means; together with means, controlled bythe liquid in the tank, for admitting and cutting off the supply of suchliquid to the pump, and setting the same in operation.

In testimony whereof I aflix my signature in the presence of twowitnesses.

XENOPHON (JAVERNO.

Witnesses:

OHAs. HYDE PRATT, HARRY RIDYARD ROBBINS.

